false	1952-08-14	null
true	1943-02-02	null
true	1947-05-12	1943-02-02
true	1957-12-10	1947-05-12
true	1968-02-03	1957-12-10
true	1981-03-14	1968-02-03
true	1989-02-02	1981-03-14
true	1995-10-09	1989-02-02
true	1999-01-03	1995-10-09
true	2007-10-01	1999-01-03
true	2013-01-03	2007-10-01
true	2015-01-01	2013-01-03
